A customer choosing a pair of shoes may also need socks. Someone buying earbuds may want a case. A skincare purchase might be more useful with the right applicator.
These are natural opportunities to increase order value because the additional product has a clear connection to what the shopper already wants.
For Shopify brands, cross-selling starts with that relationship. The next item should help the customer get more from the original purchase.
A spending incentive can then add another reason to consider it. With ShopXR Spend & Win, a qualifying purchase earns game credits that customers use after checkout to play for a chance to win prizes.
The opportunity is to bring relevant merchandising and a clear incentive together.
What is cross-selling in ecommerce?
Cross-selling means recommending a complementary product alongside the product a customer is considering.
The additional item serves a related purpose. A protective case helps look after the earbuds; socks complete the footwear purchase.
That differs from an upsell, which typically encourages the customer to choose a higher-value version of the original product.
For an ecommerce manager, the distinction helps define the campaign. Are you helping the shopper choose a different version, or making their selected purchase more complete?
This article focuses on the second opportunity.
Why product relevance matters
A shopper has already arrived with a particular need. A good cross-sell continues that decision in a way they can understand.
If the recommendation feels useful, the customer can evaluate its value quickly. They can see how it fits into their routine, protects their purchase or helps them use the product.
That gives your team a stronger starting point than recommending an item only because its price fits a promotional threshold.
The product relationship should come first. The incentive can support the decision afterwards.
How to identify complementary products for your store
Start with the customer’s intended use, then work back to the products that support it.
Ask what completes the purchase
Think about what the customer will do once the main product arrives.
Will they need an accessory? Is there a maintenance product they will use? Does another item make the original choice easier to enjoy?
These questions help uncover product combinations with a practical explanation.
Review products customers already buy together
Look at existing orders for recurring combinations.
A pairing that appears in customer purchases gives your merchandising team something concrete to investigate. Consider whether it reflects a useful relationship, a temporary promotion or a seasonal need.
You can also draw on questions customers ask before buying. Repeated questions about compatibility or accessories can reveal where a recommendation would be helpful.
Check that the recommendation is easy to explain
A useful pairing should have a simple customer-facing reason.
| Main product | Complementary product | Reason to consider it |
|---|---|---|
| Shoes | Socks | Complete the footwear purchase |
| Earbuds | Protective case | Help protect the product |
| Skincare product | Applicator | Support the application routine |
| Reusable bottle | Cleaning brush | Help maintain the bottle |
These are merchandising examples. The best pairing for your store depends on your actual products and how customers use them.
How a spending incentive can support a cross-sell
Once the product relationship is clear, consider what could make the addition more appealing within the current purchase.
A Spend & Win campaign gives the shopper a target to work towards.
For example, a customer selects shoes worth $100. The campaign offers one game credit through a qualifying $120 purchase, and matching socks cost $20.
The socks now have two relevant qualities: they complement the shoes and help the customer reach the campaign amount.
If the shopper chooses both and completes the qualifying purchase, they earn the game credit. They use it after checkout to play for a chance to win.
This is an example campaign. It shows how the decision could work, rather than predicting that every customer will add the socks.
Make the cross-sell message useful
A recommendation should explain the product benefit and the promotional opportunity clearly.
Lead with why the product belongs
Describe the relationship in everyday language.
For a protective case, explain its compatibility and purpose. For an applicator, explain how it supports use of the skincare product.
This helps the customer judge the item on its merits.
Explain the spending target accurately
The customer should understand the qualifying purchase and what it earns.
An illustrative message might read:
Complete your $120 purchase to earn one game credit. Play after checkout for a chance to win prizes.
Keep the rules consistent with the campaign.
Keep the decision manageable
Choose recommendations that are closely connected to the original product. A focused pairing is easier for your team to explain and gives the shopper a clear option to evaluate.
This is especially useful when the customer is already reviewing their cart and deciding whether they are ready to buy.
What should performance marketers and ecommerce managers review?
Cross-selling gives both teams a shared opportunity to develop.
The performance team can examine what the customer was promised before arriving. The ecommerce team can review whether the recommendation continues that promise.
For a headphone campaign focused on everyday travel, a relevant case could support the same use case. The landing page, product relationship and incentive can all tell a coherent story.
That gives the campaign a clearer direction than adding unrelated products to increase the order total.
Measure the purchases behind the AOV change
Review the specific combination you intended to encourage.
Useful measures include the share of main-product orders that also contain the recommended item, the average value of those orders and the number reaching the spending target.
Compare similar traffic sources, products and periods. This helps you understand whether the pairing is being adopted by the shoppers it was designed for.
An increase in AOV is easier to interpret when you can also see what customers chose to add.
To model a potential change using your own store figures, explore the ShopXR revenue growth calculator.
Frequently asked questions
What is the difference between cross-selling and bundling?
Cross-selling recommends a complementary item that a customer can consider adding. A bundle presents a group of products together as a combined offer. Either approach should make the relationship between the products clear.
Can cross-selling and Spend & Win work together?
Yes. A complementary product can help a shopper reach a campaign’s spending target. Through a qualifying purchase, the customer earns game credits to use after checkout for a chance to win.
Which product should I recommend first?
Start with an item that clearly improves or completes the original purchase. Review customer needs, common product pairings and compatibility before choosing the recommendation.
Give the next product a clear role
The most useful cross-sell begins with a customer need.
Choose a relevant product, explain why it belongs and make the spending opportunity easy to understand. That gives customers another reason to consider increasing their order.
Explore how ShopXR Spend & Win can support your next campaign.
About ShopXR
Built by founders who have managed ecommerce brands.
ShopXR was created by a team with experience managing campaigns for ecommerce brands, with a simple goal: help Shopify brands get more revenue and profitability from every customer they acquire.
Increase average order value (AOV) now
Turn qualifying purchases into a fun Spend & Win experience.
Encourage repeat purchases
Rewards give customers a reason to come back.
Grow revenue profitability
Get more revenue from the customers you already acquire.
Ready to grow your ecommerce business?
See what a 15% increase in AOV could mean for your store.
Use our free growth calculator to estimate your revenue uplift, or start with ShopXR for just $1.